Finally fitted the PLM Headers today.
The buzzing sound is nothing like I expected, it's very faint and barely noticeable, if anything there may be a slight leak causing a tinny/raspy sound but I'm pretty sure it's the headers as the wall thickness is thinner than stock.
I highly recommend to tighten up the bolts that hold the headers together a much as possible before installing.
I had might firm before fitting and had to tighten them up after they were on the car which was a lengthy task *sigh*
The performance is amazing, the engine revs a lot more freely al the way to redline and even out of the VTEC range it feels like there is more torque.
It sounds awesome too like a quiet sucking/buzzz sound, I have a quiet exhaust so I can here the front section of the exhaust fairly well, with a louder exhaust it would be hard to hear.
Highly recommend these headers, I bought them off eBay for $440, prob best bang for buck mod available
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